Marbella house swap, house sit in Devon

Hello,
We are based near Marbella in Spain (Costa del Sol) in a 2 bedroom and 2 bathroom appartment with a large terrace, surrounded by swimming pools. Only 15 minutes to the sea.
We would like to swap houses or appartments with a family, who live in Devon UK. (Plymouth, Totnes,Torbay).
We could also house/petsit.
Our travelling dates are 16th July till the end of August.
We would love to swap places with families, living in Australia for long time.
About us: we are a small family of 3: me, my husband and our daughter (6). We are quite, respectable, non smokers, love animals, nature and travelling!